Wall safe



W. TELEKY WALL SAFE Dec. 2, 1969 3 Sheets-Sheet l INVENTOR WALTER TELEKYAZQRMFXS Filed April 5, 1968 W. TELEKY WALL SAFE Dec. 2, 1969 3Sheets-Sheet 2 Filed April 5 1968 F G. 5 F IG 7 mwwfim $1 w W. TELEKYDec. 2, 1969 WALL SAFE 3 Sheets-Sheet 3 Filed April 5, 1968 INVENTQRWALTER TELEKY 201 Fa TTORNE s United States Patent 3,481,288 WALL SAFEWalter Teleky, 6050 Boulevard East, West New York, NJ. 07093 Filed Apr.5, 1968, Ser. No. 719,041 Int. Cl. E06b /10 US. Cl. 10958 10 ClaimsABSTRACT OF THE DISCLOSURE For the protection of valuables such asmoney, jewelry, etc., against theft when stopping at a motel or hotel,for example, a wall safe is provided which is characterized by a bodilyremovably door that is of such size that it may be conveniently carriedin a traveling bag and which is constituted so as to cooperate with theframe at the opening of a permanently installed container portion of thesafe so as to be easily placed in position in the opening and then movedlaterally, preferably responsive to manual actuation of a lock comprisedin the door, into position with opposite margins of the door securelyretained in recesses comprised in said frame and to be removed uponleaving and carried by the traveler and available for his personal usewith other container portions of the safe that are installed in otherlocations and that have frames constructed and dimensioned for use withthe door that the traveler carries in his possession. Preferably thedoor is reversible in that it is adapted for use as aforesaid whendisposed at either of two rotational positions 180 apart in the plane ofthe door. Preferably, also, two container portions of the safe areprovided as a pair disposed on opposite sides of a partition orothenwall with securing means extending through the wall for permanentlysecuring each of the container portions respectively to opposite sidesof the wall.

FIELD OF THE INVENTION This invention relates to wall safes and moreespecially relates to wall safes for the storage of money, jewelry andother valuables. The wall safe is especially suitable for installationin motels and hotels for the temporary safekeeping of valuables againsttheft.

BACKGROUND OF THE INVENTION While stopping at a motel or hotel thesakekeeping of valuables such as money, jewelry or papers is aconstantly recurring problem. The theft of valuables left in a motel orin a hotel room is a matter of alarming frequency. Facilities for thesakekeeping of valuables are rarely pro vided by motels or hotels and,if provided at all it is a matter of great inconvenience to have aperson qualified and entrusted to open a large safe for the reception orwithdrawal of ones valuables. Usually the problems results in makeshiftexpedients such as hiding the valuables in luggage or in the bedding orin some out-of-the-way spot in the furniture. However, such hidingplaces provide little or no security. Wall safes such as have been usedin residences are inconvenient and expensive for use in individual roomsof a motel or a hotel. Moreover, the provision of a key presents aproblem inasmuch as a guest provided with a key so as to make the wallsafe available for use would have an opportunity to have a duplicate keymade or he might forget to turn in the key. Moreover, in all likelihoodthe motel or hotel would have at least one other key for the same wallsafe.

SUMMARY OF THE INVENTION It is an object of this invention to provide awall safe which lends itself particularly to use in motels and hotelsPatented Dec. 2, 1969 whereby a very high degree of safety can beprovided in an inexpensive and convenient manner. To this end, the wallsafe of this invention comprises a strong container which has an openingtherein adapted for the insertion and withdrawal of valuablestherethrough and which is intended for permanent securement to a wallsuch as the wall of a room in a motel or a hotel. It also comprises aremovable door which can be readily put in place in the opening for thecontainer and then moved laterally to a position wherein oppositemargins of the door are very securely retained in recesses in the framelocated at the opening into the container and wherein it is lockedagainst movement by manual actuation of lock means secured to the insidesurface of the door. This lateral movement is preferably accomplishedresponsive to the manual actuation of the lock means. When it is desiredto open the safe so as to have access to the container, the lock meansis manually actuated to enable the door to be moved laterally toposition at which it can be readily removed from the frame.

In commercial use it is contemplated to provide container portions ofthe safe which are of standard construction and dimensions as regardsthe frame for the container opening, with the result that a given dooris adapted to be received by and locked in place in the frame of any ofthe container portions of the safe installed in other locations. Forexample, container portions having frames of standard construction anddimensions at the opening may be permanently installed in every room ofa chain of hotels or motels or, for that matter, in all motels or hotelsthat may choose to install wall safe equipment in accordance with thepresent invention. When the container portions of the wall safe are thusinstalled and in widespread use the traveler who wishes to protect hisvaluables therein may purchase a door equipped with a key and/orcombination-operated lock which is so constructed and made that it iscapable of actuating no other lock except the lock permanently securedto the door which has been purchased. The traveler who has purchased thedoor then is enabled when stopping at a motel or hotel having thecontainers installed therein to place his valuables in the container inhis room and then very easily and quickly place his door in the openingfor the container and lock it in closed position with assurance thattheft of the valuables would be very difiicult indeed. The walls of thecontainer may be of any desired thickness and strength and the door,while readily removable, is so held in locked position that it wouldpresent extreme difiiculty even to an experienced criminal to gainaccess to the contents of the safe.

A further feature of this invention resides in the way the containerportion of the safe is secured in place so as to reduce to a minimum thepossibility of the entire wall safe being stolen. To this end, containerportions are provided in pairs for securement to opposite sides of apartition or other wall with the securing means for the respectivecontainer portions passing through the wall and being permanentlyattached to the containers as by welding. When this feature is employedit is impossible to remove either one of the container portions Withoutdestroying a portion of the wall itself. Any such occurrence would beextremely unlikely.

One of the features of preferred embodiments of this invention residesin the cooperation between opposite margins of the door panel andoppositely disposed frame members at the opening of the container. Arecess is provided in each of the frame members disposed oppositely toeach other at the opening into the container. Each of these recesses isadapted to receive one of the margins of the door panel when the doorpanel is inclined relative to the plane of the opening of the container.The

frame members are dimensioned in relation to the dimensions of the doorpanel such that the door panel may be swung into position with themargin thereof opposite to the margin already received in one of therecesses in juxtaposed relation to the entrance of the recess in theoppositely disposed frame member. Upon then moving the plane of the doorpanel laterally both margins are brought into received relationship withthe recess in each of the frame members and the lock means is such as tolock the door panel against lateral movement from this position. Whenthe door panel is in this position both of the opposed margins of thedoor panel are retained very securely by the walls of the recesses whichoverlie the outside surface of the door panel along the opposite marginsthereof. Preferably the lateral movement of the door panel isaccomplished responsive to manual actuation of the lock secured to theinside surface of the door panel, as by moving a bolt laterally relativeto the door panel in the direction of permitted lateral movement of thedoor panel until it initially contacts a fixed surface of the frame andthen continuing the movement of the bolt relative to the door panel,thereby causing the door panel itself to be moved laterally.

It is a further feature of this invention that additional lockingstrength is provided by secondary holding means. Thus the frame memberagainst which the movable bolt is propelled during locking is providedwith a rib positioned to underlie the extremity of the bolt so as toprevent outward movement of the margin of the door that is adjacent thebolt. Adjacent the opposite margin of the door panel an abutment issecured which presents a ledge in general alignment with the bolt andwhich is spaced from the inside surface of the door panel so as tooverlie a corresponding rib comprised in the other door frame when thedoor panel is moved laterally into locked position.

A further feature of this invention resides in the provision of similarframe members in opposed relation at the opening of the container and inproviding locking means so disposed that the door may be inserted andlocked in position in either of two rotational positions 180 apart inthe plane of the door panel.

Further features of this invention relate to construetions whichfacilitate the use of the wall safe by the user. Thus in order tofacilitate the initial entry of a margin of the door panel into therecess in one of the frame members, the surface of the recess which isin opposed relation with respect to the inside surface of the margin ofthe door panel is inclined so that the recess is wider at the base thanat the entrance. By so constructing the recess, the entry of a margin ofthe door panel into the recess is facilitated and when the door panel isbrought into position parallel with the plane of the recesses in both ofthe oppositely disposed frame members the door panel becomes tightlyheld in place so that the outside surface of the margin of the doorpanel becomes in immediate juxtaposition with the outer wall of therecess, thereby holding the door more firmly in position and minimizingthe possibility of inserting a prying instrument.

Other features of preferred construction relate to guiding means forfacilitating the placing of the door panel in position. Thus the surfaceof the recess which comes into contact with the inside surface of thedoor panel extends substantially further into the opening than theopposite surface of the recess, thereby providing a surface whichfacilitates the initial entry of one margin of the door panel into oneof the recesses and also providing a stop against which the other marginof the door panel comes into contact when being moved into position forlocking. Preferably also a rib is provided along one or the other, orboth, of the other two walls of the opening so as to present a surfacein substantial alignment with the inner extremity of the surface of therecesses in the frame members that is disposed in opposed relation tothe inside surface of the door panel so that the door panel may beguided therealong into one or the other of the recesses.

Other features of this invention relate to the provision of a doorwherein the panel and locking means is such that the door lends itselfto utilization with wall safe containers provided with frame members ofstandard construction and dimensions. Other features of this inventionrelate to the provision of a multiplicity of the containers, each havingdoor frame construction and dimensions adapted to receive any of aplurality of removable doors.

A further feature and advantage of this invention resides in providing asafe construction whereby the parts may be inexpensively produced on aquantity production basis utilizing inexpensive rolling or extrusiontechniques and utilizing a conventional manually operable lock.

BRIEF DESCRIPTION OF THE DRAWINGS Further objects, features andadvantages of this invention will be apparent from the followingdescription of certain preferred embodiments of this invention shown inthe accompanying drawings, wherein:

FIG. 1 is an end elevation of a pair of wall safes embodying thisinvention permanently secured to opposite sides of a wall by securingmeans which passes through the wall;

FIG. 2 is a perspective view on a larger scale as compared with FIG. 1of one of the wall safes showing the door in a position assumed wheninitially being moved into position in the opening in the container ofthe wall safe;

FIG. 3 is a sectional plan view of the line 3-3 of FIG. 2 of the portionof the wall safe in the region of the opening, the removable door beingshown in the position also shown in FIG. 2 with one margin of the doorpanel received into the recess in one of the frame members at theopening into the container portion of the safe;

FIG. 4 is similar to FIG. 3 except that the door has been moved intoposition in alignment with the recesses in the frame members on oppositesides of the opening into the container;

FIG. 5 is similar to FIGS. 3 and 4 except that it shows the door afterit has been moved laterally into locked position;

FIG. 6 is an elevation showing the inside surface of the door whenviewed from the direction indicated by 6-6 of FIG. 4, the bolt of thelock being in retracted position;

FIG. 7 is an elevation taken on the line 7-7 of FIG. 5 showing theinside surface of the door panel and the frame elements, the parts beingshown in locking position and the bolt being extended;

FIG. 8 is a perspective view of a portion of an extrusion suitable foreach of the oppositely disposed recessed frame members disposed alongthe vertical walls of the opening into the container;

FIG. 9 is a perspective view of an extrusion suitable for making each ofthe frame members secured to the other two walls of the opening of thecontainer;

FIG. 10 is similar to FIG. 9 except that end portions of the upstandingrib have been milled away in order to permit assembly with the recessedframe members;

FIG. 11 is a fragmentary perspective view showing the interrelation ofthe frame members at one of the corners of the opening into thecontainer utilizing frame member extrusions as shown in FIGS. 8 and 10;and

FIG. 12 is an exploded view of the container and of the frame membersadapted to be secured in place at the opening into the container portionof the safe.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT A preferred embodiment ofthis invention as shown in the drawings comprises a container portionwhich is completely enclosed by walls except for an opening for theintroduction and withdrawal of valuables. The container may be composedof a metal such as steel, the thickness of which may be selectedaccording to the strength characteristics that are desired. Thecontainer may, for example, comprise a rectangular extrusion of steelabout inch in thickness which is closed at the end opposite the openingby a steel plate 16 of like thickness that is permanently secured to theextrusion as by welding. If desired, it may be of double wallconstruction with interposed heat insulation for providing fireresistance. The opening into the container portion 15 is provided with adoor which is indicated generally by the reference character 17.

In FIG. 1 two wall safes are shown disposed on opposite surfaces of thewall 18. The container portion of each safe is secured in place by oneor more bolts 19 which pass through the wall and which are permanentlysecured to the side walls of the container portions which, respectively,are in contact with the opposite sides of the wall 18. For example, thesecuringmeans may comprise a plurality of bolts 19 which pass throughthe side Wall of each of the container portions and is threaded at eachend for cooperation with threaded securing means such as a nut 1911 thatcan be tightened down. Moreover, the ends of the bolts and the securingmeans therefor preferably are adapted to be integrated with respect tosaid side walls of the respective container portions as by welding so asto effectively prevent the detachment of one or the other of the wallsafes.

Frame members 20 are provided at the open end of the container portion15, which opening in the embodiment shown is rectangular, with thelonger sides of the rectangle disposed vertically, said frame membersbeing disposed therealong. The frame members 20 may be readily producedin the form of a continuous extrusion such as that shown in FIG, 8 andby cutting the extrusion into desired lengths for providing thevertically disposed frame members at the opening in the container 15.

Each of the frame members 20 comprises a longitudinally disposed recess21. The wall 22 of the recess 21 which is in opposed relation to theinside surface of the door panel extends substantially further into theopening than the other wall. Moreover, the portion 22a of the wall 22 isformed with an inclined surface so that the recess 21 becomessubstantially wider at the base than it is at its mouth. The portion ofthe surface 22 of the recess 21 which extends the furthest into theopening is presented by the rib 23 which on the other side thereoffacing the interior of the container presents the locking surface 24.The frame members 20- may be secured permanently to the side walls ofthe container 15- as by welding. The frame at the opening of thecontainer is completed by oppositely disposed frame members 25 which canbe economically produced as an extrusion, as shown in FIG. 9, whichextrusion is severed to produce pieces of desired length. The framemembers 25 have a rib 26 protruding therefrom which presents a surfacesubstantially in alignment with the extremities of the surfaces 22 ofthe recesses 21 at their point of maximum extent into the opening. Afterthe extrusion for the frame members 25 has been cut into pieces ofdesired length, the end portions of the rib 26 are milled away so thatwhen the frame members 20 and 25 are installed at the frame corners asshown in FIG. 11, the surface at the end of the rib 23 will be inalignment with and flush with the surface of the rib 26. The framemembers 25 likewise are permanently secured in place, e.g., by welding.

The lock 27 is secured to the inside surface of the panel of the door17. The lock comprises a bolt member 28 which is movably mounted in thelock 27 in a plane substantially parallel with the door panel and in thedirection of permitted lateral movement of the door panel and with thebolt disposed in spaced relation to the inside surface of the door panelby a distance slightly greater than the width of the rib 23 of the framemember 20. Suitable mechanism of any known type is comprised in the lockwhereby bolt 28 may be moved between position protruding laterally fromthe lock to position retracted toward the lock. This movement of thebolt 28 is responsive to manual actuation from the outside surface ofthe door panel as by the insertion of a key 29 in the key-receiving slot30 and turning the key. The particular type of lock mechanism that isemployed is a matter of choice and many suitable lock mechanisms may beused in the practice of this invention. It is preferable to employ a keyof the type which cooperates with a plurality of spring-loaded pinswhich can be brought to release position only by a key having a givenmarginal contour unlike that of all other keys for lock mechanisms usedwith other doors. It is not essential to use a key for operating thelock mechanism. Thus the locking mechanism may be one whose release isresponsive to manipulation of a combination which is a permanent part ofthe lock so as to make it possible to move the bolt by manual actuationof a part available at the outside surface of the door.

There likewise is secured to the inside surface of the panel of the door17 an abutment 31 which extends longitudinally along the margin of thedoor disposed oppositely with respect to the margin which is adjacentthe bolt 28. The abutment 31 has a ledge 32 protruding therefrom whichis adapted to overlie the surface 24 of the rib 23 when the door is inlocked position but which is so positioned as to be out of registrationwith the surface 24 of the rib 23 when the door is being put in place oris being removed.

The operations required to put the door in position and lock it areillustrated in connection with FIGS. 4 to 7. The vertical margin of thedoor 17 which is adjacent the bolt 28 is first introduced into one ofthe recesses 21, as shown in FIGS. 2 and 3. The inclination of thesurface 22a of the recess 21 facilitates the entry of the margin of thedoor panel into the recess 21 when the door is at an angle with respectto the plane of the opening into the container as illustrated in FIG. 3.The lateral extent of the door 17 is such that the margin of the dooradjacent the abutment 31 just clears the outer wall 33 of the recess 21in the frame member 20 on the opposite side'of the opening. As shown inFIG. 4, the margin of the door panel is then in juxtaposed position withrespect to the mouth of the recess 21 in the frame member on the otherside of the opening. It also is to be noted that the ledge 32 on theabutment 31 just clears the surface 24 of the rib 23 of the same framemember 20.

The locking of the door is completed by moving the door panel 17laterally so that both of the margins of the door panel fallrespectively within the recesses 21 in the frame members 20. Inpreferred embodiments of this invention this movement is effected by themanual actuation of the key 29 or other manually actuatable member so asto cause the bolt 28 to project from the lock 27, this motion of thebolt 28 after having initially made contact with the frame memberadjacent thereto serving to move the lock and in turn the door panellaterally. It is to be noted that when this lateral movement occurs theledge 32 moves into position overlying the surface 24 of the rib 23. Ifthe key 29 is now removed, the door 17 is locked in place so that anyattempt to remove it is rendered very difiicult indeed. Since the bolt28 is in contact with one of the frame members 20 and since the ledge 32is in contact with the opposite frame member 20, the door cannot bemoved laterally in either direction. The opposite margins of the doorare thus retained all along the length thereof by the outer walls 33 ofthe recesses 21. Moreover, secondary securement is provided by the factthat the bolt 28 overlies the surface of the rib 23 of one of the framemembers 20 while the ledge 32 overlies the surface 24 of the rib 23 ofthe other frame member 20. While such secondary retaining means is notessential to the practice of this invention, it is preferable to the endthat the door may be maintained in locked position with maximum securityagainst efforts to pry it open. It is to be noted in connection withFIGS. 4 and 5 that by providing the inclined surface 22a the entry ofthe margin of the door panel is facilitated but that when the door hasbeen moved into parallel relation with respect to the opening in thecontainer there is very little play between the margins of the doorpanel and the inner surface of the wall 33 on one side thereof and thesurface of the rib 23 on the other side thereof.

It is to be noted that the contours of the frame members on oppositesides of the opening into the container portion are essentially the sameand that in FIGS. 3, 4 and 5 the bolt 28 is shown adjacent the leftmargin of the door panel. It also is to be noted that the location ofthe bolt 28 and of the abutment 32 and ledge 33 is such that the doorcan be rotated 180 in the plane of the door panel until the bolt 28becomes positioned adjacent the right margin of the door panel. When thedoor is in this latter position the right-hand margin of the door wouldbe inserted into the recess in the frame member 20 at the right-handside of the opening. The closing of the door would be completed byswinging the door panel into the plane of the recesses in the framemembers 20 and lateral movement of the door panel into locked positionwould be to the left instead of to the right. When the containerportions of the wall safe are secured to opposite surfaces of a wall, asshown in FIG. 1, it is usually convenient to initially insert a marginof the door into the recess in the door frame that is in closestproximity to the surface of the wall. This is made possible by the factthat as between the containers on opposite sides of the wall 18 one ofthe doors 17 may be in inverted position with respect to the other doorby a rotation of 180 in the plane of the door.

When it is desired to remove the door all that is required is toreinsert the key 29 and retract the bolt 28. Then the door can be easilymoved laterally so that the margin of the door adjacent the abutment 31becomes free to be swung outwardly accompanied by bodily removal of thedoor.

While the wall safe may be made so as to be of any desired dimension, itis ample for most purposes encountered when using a room in a motel or ahotel if the container is approximately 6 /2 inches high and 4% incheswide. The length can be anything which is desired, for example, 9inches. For a wall safe having the dimen sions just mentioned, the doorfor use therewith may advantageously measure approximately 5% inches by3% inches. A door such as this is small in size, lies flat and is lightin weight. The door and the key with which to operate it can beconveniently carried when traveling, in luggage or even in a handbag.When arriving at a motel or a hotel equipped with the permanentlyinstalled container portions of the safe, valuables such as money orjewelry may be placed in the container and the door, which can be lockedand unlocked only by a key carried by the traveler or by a combinationknown to him, is put in place and brought to locked position. Becausethe container portion of the wall safe is so firmly and permanentlysecured and because both the door and the parts providing the lock areso strong any valuables left in the safe are effectively secured againsttheft.

I claim:

1. A wall safe comprising a container for the reception of valuableswhich has an opening therein adapted for the insertion and withdrawal ofvaluables therethrough, said container being completely enclosed bywalls except for said opening,

first and second frame members presented respectively by and alongoppositely disposed walls of said opening, each frame member having alongitudinally disposed recess therein,

a readily removable door for said opening which has a margin thereofadapted to be received in the recess of said first frame member andwhich is adapted while said margin is so received to be swung intoposition with the opposite margin thereof in juxtaposed relation withrespect to the recess in said second frame member and then movedlaterally to effect penetration of said other margin into said recess insaid second frame member while said firstmentioned margin remains to asubstantial extent within the recess in said first frame member, and

lock means, secured to the inside surface and said door which ismanually actuatable from outside said door to lock said door againstlateral movement when said door is disposed in position with saidmargins thereof received respectively within said recesses in said firstand second frame members.

2. A wall safe according to claim 1 wherein said lock means comprisesmeans responsive to manual actuation of said lock means for moving saiddoor laterally from position with said other margin in juxtaposedrelation with respect to said recess in said second member to positionwith said other margin received by said recess in said second member.

3. A wall safe according to claim 1 wherein either of said margins ofsaid door is adapted to be received in the recess in either of saidframe members whereby said door is operable to be inserted and removedwhen in either of two positions of rotation through in the plane of thedoor.

4. A wall safe according to claim 1 wherein the surface of the wall ofeach said recess that is in opposed relation to the inside surface ofthe door when said opening is closed by said door is inclined inwardlyextending from adjacent the mol'ith of the recess to the base thereof sothat said recess is wider at the base than at the mouth thereof therebyfacilitating entry of one of the said margins of the door therein whilethe plane of the door is correspondingly inclined relative to the planeof the door when the door is in a closed position.

5. A wall safe according to claim 1 wherein the surface of the wall ofeach said recess that is in opposed relation to the inside surface ofthe door when said door is closed extends substantially further intosaid opening than the other wall of said recess, thereby providing astop for facilitating the reception and positioning of the door inclosed p0siti0n.

6. A wall safe according to claim 1 wherein said opening issubstantially rectangular, and said first and second frame members aredisposed along the longer side of the rectangle and are substantiallyvertically disposed.

7. A wall safe according to claim 6 which comprises frame membersdisposed along the upper and lower walls of the opening each of whichpresents a rib presenting a surface substantially flush with theterminal surface of the walls of each of said recesses in said first andsecond frame members that is opposed to the inside surface of the doorwhen the door is closed.

8. A wall safe according to claim 1 wherein each of said first andsecond frame members c mprises a rib disposed along at least part of itslongitudinal extent, a member in secured relation to the inside surfaceof said door having a protruding ledge that is adjacent one of themargins of the door and that is disposed in opposed looking relationwith respect to the rib presented by one of said frame members when saiddoor is moved into locked position and that is moved out of said lockedposition with respect to said rib when the adjacent margin of the dooris moved out of locking position with respect to the recess in which itis disposed when the door is in locked position, and a bolt that ismovable toward and away from the opposite frame member responsive tomanual actuation of the lock and that is disposed so as to overlie therib presented by the opposite frame member in locked engagementtherewith when said bolt is disposed in extended position while saiddoor is in its locked position.

9. A wall safe installation which comprises in combination with abuilding wall,

a pair of wall safes each of which comprises a container for thereception of valuables that has an opening therein adapted for theinsertion and withdrawal of valuables therethrough, said c ntainersbeing disposed in substantially opposed registration with respect toeach other on opposite sides of said wall with portions of saidcontainers respectively abutting opposite surfaces of said wall;

securing means passing through said wall and permanently securedadjacent each end thereof to each of said portions of said containers,respectively, so that said containers are permanently tied together withsaid building wall interposed between them;

a readily removable door for the opening in each of said containers, thedoor for each of said containers being readily removable from andexchangeably replaceable in the opening in either of said containers;said lock means associated with each of said doors and actuatable fromthe exterior surface thereof for locking each of said doors,respectively, against removal when placed in position to close theopening in either of said containers.

10. A wall safe installation according to claim 9 in which the door ofeach of said containers is adapted to be'readily secured to and removedfrom the opening in each of said containers when in each of twopositions of rotation through 180 in the plane of the door.

References Cited UNITED STATES PATENTS 1,704,854 3/1929 Burgess 2923021,852,053 4/1932 Jendrek 10966 2,635,563 4/1953 McBride 10958 2,677,3385/1954 Sassetti 10959 2,800,090 7/1957 Reid 109-59 2,819,692 1/1958Johnson et a1. 109-50 DAVID J. WILLIAMOWSKY, Primary Examiner P. C.KANNAN, Assistant Examiner US. Cl. X.R. 451; 292-302

